Riesel primes of the form 479•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 479 , 2 Count : 40 Nash : 1359 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

12, 20, 28, 36, 48, 72, 92, 108, 128, 164, 172, 256, 320, 332, 348, 496, 932, 1008, 1952, 2876, 5696, 6488, 11444, 12516, 20204, 40104, 44736, 55932, 56708, 73716, 99668, 158012, 208496, 251952, 300140, 313660, 342528, 386516, 1780112, 2553152

History

• 2023-08-18: Found n = 2553152, Florian Piesker
• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-04-21: Found n = 1780112, Florian Piesker
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-03-31: Found n = 386516, Steven Tjung
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-02-14: Found n = 342528, Steven Tjung
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-04-13: Found n = 251952, Steven Harvey
• 2004-11-10: Found n = 208496, Steven Harvey
• 2001-05-21: Found n = 99668, Michael Ian Hartley